The sun-appserv-update Task

Enables deployed applications (EAR files) and modules (EJB JAR,
RAR, and WAR files) to be updated and reloaded for fast iterative
development. This task copies modified class files, XML files, and
other contents of the archive files to the appropriate subdirectory
of the domain-dir/applications directory, then
touches the .reload file to cause dynamic reloading
to occur.

This is a local task and must be executed on the same machine
as the Enterprise Server.